92 ORDER 43. LEGUMINOS^E. 



10 T. INCAKNATUM. St. erect, flexuous; Ifts. round-ovate, obtuse or obcordate, vil- 

 lone ; spike dense, oblong, pedunculate. Italy. 2f. Red. 



33. MEDIC AGO, L. MEDICK. Calyx 5-cleft. Cor. deciduous. Vex. 

 free and remote from the keel. Leg. variously curved, or spirally coiled of 

 twisted. Lvs. pinnately 3-foliate, denticulate. European. 



* Pods smooth Nos. 1, 2, 3. * * Pods spiny Nos. 4, 5, 6. 



1 OT. lupuliiia L. None-such. Procumbent, pubescent; Ifts. wedge-obovate ; fls. 



yellow ; pod reniform, 1-seeded. (I) Waste grounds. 620'. May July. 



2 in. sativa L. Lucerne. Erect, glabrous ; Ifts. oblong-lanceolate ; stip. lance-linear ; 



fls. violet-purple, large ; pod spiral. it Fields : rare. 2 3f. June, July. 



3 M. scutellata L. Snails. Lfts. elliptical and obovate ; ped. 1-3-flowered, shorter 



than the leaf; pod coiled like a snail-shell. Gardens. July. 



4 M. doiitioulata Willd. Lfts. obovate ; stip. bristly-gashed ; ped. with 13 yellow 



flowers ; pod loosely spiral, border doubly echinate. (T) 1 2f. June. 



5 ]TI. macula.ta Willd. Lfts. obcordate, with a purple spot ; ped. 2-3-flowered ; pod 



compactly spiral, outer edge grooved and doubly spiny. (T) 



6 OT. intertexta L. Hedgehog. Lfts. rhomboidal ; stip. gashed ; pod spirally coiled 



in 5 or 6 turns, bordered with bristly prickles. Rare. 



34. MELILOTUS, Tourn. MELILOT. Legume ovoid, wrinkled, longer 

 than the calyx, 1-2-seeded. Fls. as in Trifoliurn. d)(2) Leaves pinnately 

 trifoliate, leaflets toothed. Flowers in racemes. June, July. 



1 M. officlnalis Willd. Fls. yellow; Ifts. obovate-oblong, obtuse; stem erect, with 



spreading branches. Alluvion. 3f. Raceme slender, one-sided. 



2 IK. alba Lam. Siveet-scented Clover. Fls. white; Ifts. ovate-oblong, truncate, mil 



cronate ; vex. longer than the other petals. Fields. 4 6f. 



35. PSORALEA. Cal. 5-cleft, campanulate. Segm. acuminate, lower 

 one longest. Stam. diadelphous, rarely somewhat monadelphous. Pod as 

 long as the calyx, 1-seeded, indehiscent. U ^ Often glandular-dotted. 

 Stip. cohering with the base of the petiole. Flowers cyanic. 



* Leaves, at least the upper ones, 1-foliate, lowest 3-foliate Nos. 1, 2 



* Leaves all pinnately 3-foliate Nos. 3,4, 5 



* Leaves pinnately 19-21-foliate No. 6 



* Leaves palmately 3-7-foliate. a Silky or smooth. Fls. loosely spicate. . .Nos. 7, 8, 9 



a Villous. Flowers densely capitate Nos. 10, 11 



1 P. canescens MX. Bushy, downy-canescent ; lower Ivs. palmately 3-foliate ; Ifts. 



roundish obovate, dotted, upper simple. Woods, S. 2f. 



2 P. virgata N. Virgate, smoothish ; lowest Ivs. pinnately 3-foliate ; Ifts. linear or 



ob\ong, often all simple ; spikes rather dense. Ga. 2f. 



3 P. stipulata T. & G. Smoothish ; Ifts. elliptic-ovate, obtuse ; stipules large, ovate ; 



ped. as long as the leaves ; spikes capitate. Falls of Ohio, Ky. 



4 P. melilotoides MX. Smoothish ; Ifts. lance-oblong, obtuse ; etip. lanceolate ; 



ped. much longer than the leaves. Dry soils, S. and W. 2f. 



5 P. Onobrycl&is N. Pubescent; Ifts. ovate, acuminate; stipules filiform; ped. 



long, with slender spikes. Thickets, W. 3 5f. June, July. 



6 P. multijuga Ell. Lfts. numerous, oblong-lanceolate, obtuse; spikes oblong; 



calyx villous, with long teeth. Upper country. Car. Ga. 



7 P. Lupiuellus MX. Slender, glabrous ; Ifts. 57, linear-filiform ; rac. elongated ; 



fls. violet ; pod S-shaped. Woods, S. 2f. May. June. 



